CN207446241U

CN207446241U - A kind of biodiesel catalytic separation reaction unit

Info

Publication number: CN207446241U
Application number: CN201721359760.7U
Authority: CN
Inventors: 廖宇丹; 梁程富
Original assignee: SICHUAN HONGKAI CHEMICAL TECHNOLOGY Co Ltd
Current assignee: SICHUAN HONGKAI CHEMICAL TECHNOLOGY Co Ltd
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2018-06-05
Anticipated expiration: 2027-10-20

Abstract

The utility model discloses a kind of biodiesel catalytic separation reaction units, are related to bioenergy technical field, solve in the prior art, and reaction efficiency is low, the technical problems such as complex treatment process.It includes reactor, stirring rod, branch is stirred, carbon membrane recycles water out, Methanol Recovery mouth, the Methanol Recovery mouth is located at reactor outer wall top, and recycling water out is located at reactor outer wall lower part, and the reactor inside upper part is fixed with infiltrating and vaporizing membrane, the lower part of infiltrating and vaporizing membrane forms a cavity with the carbon membrane positioned at reactor lower inside, and the stirring branch in stirring rod is coated with polymer blended catalytic membrane.The utility model installation is simple, can be greatly improved reaction efficiency, the utilization rate and service life of equipment and subtracts dirty effect, is mainly used in the production preparation field of biodiesel.

Description

A kind of biodiesel catalytic separation reaction unit

Technical field

The utility model is related to bioenergy technical field, more particularly to a kind of biodiesel catalytic separation film reaction dress It puts.

Background technology

Oil crisis and energy security have become the problem of global common concern.At the same time, petrochemical industry fuel oil largely burns The environmental pollution brought and the positive getting worse of the greenhouse effects caused by carbon emission.Seek sustainable development, environmentally protective replace The focus and emphasis of national governments and associated mechanisms concern is increasingly becoming for the energy.Wherein, biodiesel is considered as future Solve the problems, such as one of important channel of liquid energy.

The main method for preparing biodiesel at present is that chemical method includes ester-interchange method and esterification process, ester-interchange method and ester Change method is broadly divided into homogeneous catalysis method and heterogeneous catalysis method.Homogeneous catalysis method is widely used side in current preparation process Method, typically with liquid acid (such as sulfuric acid, hydrochloric acid), liquid base (sodium hydroxide, potassium hydroxide, sodium methoxide etc.) for catalyst into Row homogeneous catalytic reaction.Although homogeneous catalysis method has, reaction speed is fast, high conversion rate, to production equipment seriously corroded, together When produce a large amount of industrial wastewaters, cause environmental pollution, under the global requirement of national energy-saving emission reduction and low-carbon economy, just gradual quilt It eliminates.Heterogeneous phase chemistry catalysis method can overcome the shortcomings of the above method, it be with solid acid (alkali), superpower solid acid (alkali), from Sub-exchange resin, heteropoly acid, metal oxide, molecular sieve, sulfide, metal salt and natural clay ore deposit etc. are used as solid catalysis Agent has mild reaction condition, automatic continuous production easy to implement, small to equipment corrosion and environmentally safe etc. excellent Point.But the catalytic activity of solid catalyst is low compared with homogeneous catalyst；As other heterogeneous catalytic reactions, solid catalyst Coking and loss of activity easily occurs for surface.In addition, the presence of water has heterogeneous catalytic reaction large effect, moisture not only can Inhibit the progress of esterification, weaken the activity of catalyst, can also cause ester hydrolysis, so as to saponification occur.

Utility model content

For above deficiency, the utility model provides a kind of intensified response efficiency, energy saving, simplifies biodiesel processing The device of technique.

In order to achieve the above objects and other related objects, the utility model base case is as follows：

A kind of biodiesel catalytic separation reaction unit, including reactor, stirring rod stirs branch, carbon membrane, and recycle-water goes out Mouthful, Methanol Recovery mouth, the Methanol Recovery mouth is located at reactor outer wall top, and recycling water out is located at reactor outer wall lower part, The reactor inside upper part is fixed with infiltrating and vaporizing membrane, the lower part of infiltrating and vaporizing membrane and the carbon membrane positioned at reactor lower inside A cavity is formed, the stirring branch in stirring rod is coated with polymer blended catalytic membrane.

Further, the reactor lower part is provided with coarse biodiesel outlet, and coarse biodiesel is exported through infiltration vapour Change film.Advantageous effect：Coarse biodiesel is collected, reaction unit is disengaged it from, further to purify.

Further, the recycling water out is connected by switching with the water store tank, and water store tank upper end passes through Switch is connected with the Methanol Recovery mouth.Advantageous effect：The water in reactor is made to depart from reaction unit, improves the utilization of device Efficiency.

Further, coarse biodiesel outlet by centrifuge respectively with biodiesel storage tank and glycerin storage tank Connection.Advantageous effect：Glycerine is separated with fatty acid methyl ester by centrifugation, higher to obtain purity, using effect is more Good biodiesel.

Further, the upper cover of the reactor is equipped with temperature monitor.Advantageous effect：It can by temperature monitor To detect the temperature in reactor, keep the safety in production, it is more than combustible flash-point to avoid making temperature in reactor, so as to occur not Security incident.

Further, the aperture diameter of the carbon membrane is 1.4um.Advantageous effect：The micropore diameter of 1.4um optionally mistake The smaller substance of the particles such as glycerine and aliphatic acid potassium ester is filtered, the raw material not reacted completely is retained, greatly improves reaction efficiency.

Further, the macromolecular chain of the polymer blended catalysis introduces strong acid group.Advantageous effect：It overcomes Liquid acidifier enhances the repeat usage of catalyst to the corrosion of equipment and the active funeral problem of solid catalyst.

The operation principle of the utility model is：Esterification and ester exchange reaction, the product of generation occur in the reactor fat Fat acid potassium ester, G ＆ W.The utility model is coated with polymer blended catalytic membrane on stirring branch, it is possible to increase the ratio table of reaction Area, intensified response efficiency.Polymer blended catalytic membrane introduces strong acid group and serves as catalyst, can overcome liquid acid, liquid Alkali is done the problem of catalytic erosion equipment, and can also reduce quantity of wastewater effluent.Also solid acid, solid base can be overcome to make catalyst When loss of activity the drawbacks of.Infiltrating and vaporizing membrane is set in the reactor, can filter reaction generation water because esterification and Ester exchange reaction is reversible reaction, and water increases, and can inhibit continuing for reaction, and the water of generation is disposed in filtering in time Divide, the yield of biodiesel can be improved, water enters water store tank by recovery port water out, and (temperature is heated to water store tank Degree is at 65 DEG C~90 DEG C), methanol gasifying soluble in water, which is entered by Methanol Recovery mouth in reactor, to be continued to be recycled, can Save the input cost of methanol.The pore size of the carbon membrane is：0.14um, reaction raw materials oil droplet it is a diameter of (20~ 1800um), carbon membrane mocromembrane hole optionally makes the smaller fatty acid methyl ester of diameter (biodiesel), and glycerine is by further Make reaction mobile to forward direction, improve reaction efficiency.The mixture of glycerine and fatty acid methyl ester, which enters in centrifuge, to be centrifuged Separation, can obtain the higher biodiesel of purity.

As described above：By adopting the above-described technical solution, the beneficial effects of the invention are as follows：

1. the utility model is coated with polymer blended catalytic membrane on stirring branch, it is possible to increase the specific surface area of reaction increases Strong reaction efficiency.Polymer blended catalytic membrane introduces strong acid group and serves as catalyst, and liquid acid, liquid base can be overcome to be catalyzed The problem of agent etching apparatus, and can also reduce quantity of wastewater effluent.Also solid acid, solid base can be overcome to do active funeral during catalyst The drawbacks of mistake.

2. setting infiltrating and vaporizing membrane in the reactor, the moisture of generation is disposed in filtering in time, can improve biodiesel The utilization rate of yield and consersion unit.

3. using the carbon membrane that mocromembrane hole is 0.14um, optionally make diameter smaller fatty acid methyl ester (biological bavin Oil), glycerine is by further making reaction mobile to forward direction, improving reaction efficiency.

4. the recycling of methanol recovery device maximizing methanol, economize on resources and production cost.

5. safety detection device temperature monitor can carry out the monitoring of reaction temperature, it is ensured that reaction is persistently normally carried out.

Description of the drawings

Fig. 1 is a kind of sectional view of biodiesel catalytic separation film reaction device embodiment reactor of the utility model；

Fig. 2 is a kind of biodiesel catalytic separation film reaction device embodiment structure diagram of the utility model；

Reference numeral：1- reactors, 2- stirring rod, 3- temperature monitors, 4- feed inlets, 5- Pervaporation membranes, 6- stirrings Branch, the polymer blended catalytic membranes of 7-, 8- carbon membranes, 9- recycling water out, the outlet of 10- coarse biodiesels, 11- Methanol Recoveries mouth, 12- centrifuges, 13- glycerin storage tanks, 14- biodiesel storage tanks, 15- switches, 16- water store tanks.

Specific embodiment

In order to which those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following embodiment to this Utility model is described in further detail.

Embodiment 1

As depicted in figs. 1 and 2, a kind of biodiesel catalytic separation reaction unit, including reactor 1, stirring rod 2, stirring Branch 6, carbon membrane 8 recycle water out 9, Methanol Recovery mouth 11, and the Methanol Recovery mouth 11 is located at 1 outer wall top of reactor, recycles Water out 9 is located at 1 outer wall lower part of reactor, and 1 inside upper part of reactor is fixed with infiltrating and vaporizing membrane 5, infiltrating and vaporizing membrane 5 Lower part forms a cavity with the carbon membrane 8 positioned at 1 lower inside of reactor, and the stirring branch 6 in stirring rod 2 is coated with macromolecule and is total to Mixed catalytic membrane 7.

The reactor lower part is provided with coarse biodiesel outlet, and coarse biodiesel is exported through infiltrating and vaporizing membrane.

The recycling water out is connected by switching with the water store tank, and water store tank upper end passes through switch and institute The Methanol Recovery mouth connection stated.

The coarse biodiesel outlet is connected by centrifuge with biodiesel storage tank and glycerin storage tank respectively.

The upper cover of the reactor is equipped with temperature monitor.

The aperture diameter of the carbon membrane is 1.4um.

The macromolecular chain of the polymer blended catalysis introduces strong acid group.

In the present embodiment, the required raw material of reaction is added into reactor by feed inlet 4, ester occurs in reactor 1 Change and ester exchange reaction, the product of generation have aliphatic acid potassium ester, G ＆ W.The utility model is coated with height on stirring branch 6 Catalytic membrane 7 is blended in molecule, it is possible to increase the specific surface area of reaction, intensified response efficiency.Polymer blended catalytic membrane 7 introduces highly acid Group serves as catalyst, can overcome the problems, such as that liquid acid, liquid base do catalytic erosion equipment, and can also reduce sewage discharge Amount.When can also overcome the solid acid, solid base to make catalyst the drawbacks of loss of activity.Infiltrating and vaporizing membrane 5 is set in reactor 1, The water of reaction generation can be filtered, because esterification and ester exchange reaction are reversible reaction, water increases, and can inhibit to react Continue, the moisture of generation is disposed in filtering in time, can improve the yield of biodiesel.The pore size of the carbon membrane 8 For：0.14um, a diameter of (20~1800um) of reaction raw materials oil droplet, 8 mocromembrane hole of carbon membrane optionally make diameter smaller Fatty acid methyl ester (biodiesel), glycerine is by further making reaction mobile to forward direction, improving reaction efficiency.Reactor Upper cover is equipped with temperature monitor 3, and the temperature in reactor can be detected by temperature monitor 3, keeps the safety in production, keeps away It is more than combustible flash-point to exempt to make temperature in reactor, so as to dangerous accident occur.1 outer wall top of reactor is provided with methanol and returns Closing in 11, the 1 outer wall lower part of reactor are provided with recycling water out 9, and methanol soluble in water enters in water store tank 16, gives Water store tank 16 is heated (temperature is at 65 DEG C~90 DEG C), opens switch 15, and methanol gasifying soluble in water is returned by methanol Closing in 11, which enters in reactor 1, to be continued to be recycled.Coarse biodiesel outlet 10 by centrifuge 12 respectively with biodiesel Holding vessel 14 and glycerin storage tank 13 connect, and glycerine and fatty acid methyl ester are separated by centrifugation, so as to obtain purity compared with Height, the better biodiesel of using effect.

The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, the utility model Scope of patent protection be subject to claims, what every specification and accompanying drawing content with the utility model was made is equal Structure change similarly should be included in the scope of protection of the utility model.

Claims

1. a kind of biodiesel catalytic separation reaction unit, including reactor (1), stirring rod (2), infiltrating and vaporizing membrane (5), stirring Branch (6), carbon membrane (8), recycling water out (9), Methanol Recovery mouth (11), the Methanol Recovery mouth (11) are located at reactor (1) outside Wall top, recycling water out (9) are located at reactor (1) outer wall lower part, it is characterised in that：Reactor (1) inside upper part is solid Surely there is infiltrating and vaporizing membrane (5), the lower part of infiltrating and vaporizing membrane (5) forms one with the carbon membrane (8) positioned at reactor (1) lower inside Cavity, the stirring branch (6) in stirring rod (2) are coated with polymer blended catalytic membrane (7).

2. a kind of biodiesel catalytic separation reaction unit according to claim 1, it is characterised in that：The reactor (1) lower part is additionally provided with coarse biodiesel outlet (10), and the coarse biodiesel outlet (10) passes through infiltrating and vaporizing membrane (5).

3. a kind of biodiesel catalytic separation reaction unit according to claim 1, it is characterised in that：The recycle-water goes out Mouth (9) is connected by switching (15) with water store tank (16), and the upper end of water store tank (16), which passes through, switchs (15) and the methanol Recovery port (11) connects.

4. a kind of biodiesel catalytic separation reaction unit according to claim 2, it is characterised in that：The coarse biometric bavin Oil export (10) is connected (13) by centrifuge (12) with biodiesel storage tank (14) and glycerin storage tank respectively.

5. a kind of biodiesel catalytic separation reaction unit according to claim 1, it is characterised in that：The reactor (1) upper cover is equipped with temperature monitor (3).

6. a kind of biodiesel catalytic separation reaction unit according to claim 1, it is characterised in that：The carbon membrane (8) Aperture diameter be 1.4um.

7. a kind of biodiesel catalytic separation reaction unit according to claim 1, it is characterised in that：The macromolecule is total to The macromolecular chain of mixed catalytic membrane (7) introduces strong acid group.